Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/65004
Type: Artigo de periódico
Title: Effects of magnetic fields on biomass and glutathione production by the yeast Saccharomyces cerevisiae
Author: Santos, LO
Alegre, RM
Garcia-Diego, C
Cuellar, J
Abstract: The effect of magnetic fields (MF) on glutathione (GSH) production by Saccharomyces cerevisiae ATCC 7754 was studied. For this purpose, a factorial design of experiments was used to determine the influence of the time of exposure (8-16 h) and MF induction (25.0-34.3 mT), in GSH and biomass production. Additionally, control experiments (CE), without the application of MF, were performed. The results indicated the existence of favourable alterations in GSH and biomass concentrations due to the application of MF. In all experiments, the amount of biomass produced was higher than in CE and, with regard to GSH yield, in all the experiments at 24 and 48 h it was higher and in three experiments at 72 h of culture. The highest specific GSH yield (20.9 mg(GSH)/g(biomass)), GSH yield (340.0 mg/L) and biomass (16.26 g/L) were obtained using a MF induction of 25.0 mT for 16 h. These results were 16.1%, 39.0% and 19.6% higher than in the CE, respectively. Through statistical analysis it was found that the MF induction was a significant factor in GSH yield, and also it was observed that, within the range of the experimental conditions used, the lower MF induction, the higher the GSH yield. (C) 2010 Elsevier Ltd. All rights reserved.
Subject: Glutathione
Magnetic fields
Yeast
Fermentation
Saccharomyces cerevisiae
Experimental design
Country: Inglaterra
Editor: Elsevier Sci Ltd
Rights: fechado
Identifier DOI: 10.1016/j.procbio.2010.05.008
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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